obama continues to field questions about his administration's response to the attack on the u.s. consulate on benghazi including with msnbc's "morning joe" co-hosts joe scarborough and mika brzezinski. >> if we find out that there was a big breakdown, they will be held accountable. ultimately as commander in chief i'm responsible. and i don't shy away from that responsibility. >> reporter: the full interview will air monday. traveling with the president, in new hampshire, kristen welker, nbc news. >> reporter: this is peter zander in lando lakes, florida, where mitt romney is trying to pump up the vote on opening day of the in-person early voting here. vowing he would be a bipartisan leader mr. romney laid into the president. >> he promised that his would be a post partisan presidency. we have watched him over the last four years and he's been divisive and demonized any group that opposed him. >> reporter: minutes earlier marco rubio attacked president obama's proposals with his sharp partisan rebuke. >> they are the ideas of countries that people come here to get away from. >> r